<?php
/**
 * PHPUnit
 *
 * Copyright (c) 2002-2012, Sebastian Bergmann <sb@sebastian-bergmann.de>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *
 *   * Neither the name of Sebastian Bergmann nor the names of his
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @package    DbUnit
 * @author     Mike Lively <m@digitalsandwich.com>
 * @copyright  2002-2012 Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
 * @link       http://www.phpunit.de/
 * @since      File available since Release 1.0.0
 */

/**
 * A yaml dataset persistor
 *
 * @package    DbUnit
 * @author     Mike Lively <m@digitalsandwich.com>
 * @copyright  2010 Mike Lively <m@digitalsandwich.com>
 * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
 * @version    Release: @package_version@
 * @link       http://www.phpunit.de/
 * @since      Class available since Release 1.0.0
 */
class PHPUnit_Extensions_Database_DataSet_Persistors_Yaml implements PHPUnit_Extensions_Database_DataSet_IPersistable
{
    /**
     * @var string
     */
    protected $filename;

    /**
     * Sets the filename that this persistor will save to.
     *
     * @param string $filename
     */
    public function setFileName($filename)
    {
        $this->filename = $filename;
    }

    /**
     * Writes the dataset to a yaml file
     *
     * @param PHPUnit_Extensions_Database_DataSet_IDataSet $dataset
     */
    public function write(PHPUnit_Extensions_Database_DataSet_IDataSet $dataset)
    {
        $phpArr      = array();
        $emptyTables = array();

        foreach ($dataset as $table) {
            $tableName          = $table->getTableMetaData()->getTableName();
            $rowCount           = $table->getRowCount();

            if (!$rowCount) {
                $emptyTables[] = $tableName;
                continue;
            }

            $phpArr[$tableName] = array();

            for ($i = 0; $i < $rowCount; $i++) {
                $phpArr[$tableName][] = $table->getRow($i);
            }
        }

        $emptyTablesAsString = '';

        if (count($emptyTables)) {
            $emptyTablesAsString = implode(":\n", $emptyTables) . ":\n\n";
        }

        file_put_contents(
          $this->filename, sfYaml::dump($phpArr, 3) . $emptyTablesAsString
        );
    }
}
